A proof-of-principle model of a two wheeled lunar dump truck was designed to display at the 1989 Summer Conference. The dump truck consists of a cylindrical bucket suspended between two wheels with the center of gravity of the bucket lower than the axis of the wheels. This gives the truck great stability in rough terrain. One motor on each wheel controls the movement of the truck and limits the moving parts to only two. The design of the mechanical drive, the electrical system, and the control systems are examined. Conclusion and recommendations are given.